Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells

The radial junction (RJ) architecture has proven beneficial for the design of a new generation of high performance thin film photovoltaics. We herein carry out a comprehensive modeling of the light in-coupling, propagation and absorption profile within RJ thin film cells based on an accurate set of...

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Main Authors:	Yu, Linwei, Misra, Soumyadeep, Wang, Junzhuan, Qian, Shengyi, Foldyna, Martin, Xu, Jun, Shi, Yi, Johnson, Erik, Cabarrocas, Pere Roca i
Format:	Online
Language:	English
Published:	Nature Publishing Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3950579/

id	pubmed-3950579
recordtype	oai_dc
spelling	pubmed-39505792014-03-19 Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells Yu, Linwei Misra, Soumyadeep Wang, Junzhuan Qian, Shengyi Foldyna, Martin Xu, Jun Shi, Yi Johnson, Erik Cabarrocas, Pere Roca i Article The radial junction (RJ) architecture has proven beneficial for the design of a new generation of high performance thin film photovoltaics. We herein carry out a comprehensive modeling of the light in-coupling, propagation and absorption profile within RJ thin film cells based on an accurate set of material properties extracted from spectroscopic ellipsometry measurements. This has enabled us to understand and evaluate the impact of varying several key parameters on the light harvesting in radially formed thin film solar cells. We found that the resonance mode absorption and antenna-like light in-coupling behavior in the RJ cell cavity can lead to a unique absorption distribution in the absorber that is very different from the situation expected in a planar thin film cell, and that has to be taken into account in the design of high performance RJ thin film solar cells. When compared to the experimental EQE response of real RJ solar cells, this modeling also provides an insightful and powerful tool to resolve the wavelength-dependent contributions arising from individual RJ units and/or from strong light trapping due to the presence of the RJ cell array. Nature Publishing Group 2014-03-12 /pmc/articles/PMC3950579/ /pubmed/24619197 http://dx.doi.org/10.1038/srep04357 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/3.0/ This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Yu, Linwei Misra, Soumyadeep Wang, Junzhuan Qian, Shengyi Foldyna, Martin Xu, Jun Shi, Yi Johnson, Erik Cabarrocas, Pere Roca i
spellingShingle	Yu, Linwei Misra, Soumyadeep Wang, Junzhuan Qian, Shengyi Foldyna, Martin Xu, Jun Shi, Yi Johnson, Erik Cabarrocas, Pere Roca i Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
author_facet	Yu, Linwei Misra, Soumyadeep Wang, Junzhuan Qian, Shengyi Foldyna, Martin Xu, Jun Shi, Yi Johnson, Erik Cabarrocas, Pere Roca i
author_sort	Yu, Linwei
title	Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
title_short	Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
title_full	Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
title_fullStr	Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
title_full_unstemmed	Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells
title_sort	understanding light harvesting in radial junction amorphous silicon thin film solar cells
description	The radial junction (RJ) architecture has proven beneficial for the design of a new generation of high performance thin film photovoltaics. We herein carry out a comprehensive modeling of the light in-coupling, propagation and absorption profile within RJ thin film cells based on an accurate set of material properties extracted from spectroscopic ellipsometry measurements. This has enabled us to understand and evaluate the impact of varying several key parameters on the light harvesting in radially formed thin film solar cells. We found that the resonance mode absorption and antenna-like light in-coupling behavior in the RJ cell cavity can lead to a unique absorption distribution in the absorber that is very different from the situation expected in a planar thin film cell, and that has to be taken into account in the design of high performance RJ thin film solar cells. When compared to the experimental EQE response of real RJ solar cells, this modeling also provides an insightful and powerful tool to resolve the wavelength-dependent contributions arising from individual RJ units and/or from strong light trapping due to the presence of the RJ cell array.
publisher	Nature Publishing Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3950579/
_version_	1612066647983521792

Understanding Light Harvesting in Radial Junction Amorphous Silicon Thin Film Solar Cells

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